For Startup Firms, the Cost of Buying Real Estate, Building

For startup firms, the cost of buying real estate, building facilities, and purchasing equipment often exceeds the firm's ability to provide funds for those needs on its own. Which of the following reasons that motivate firms to seek funding or financing is illustrated in this example?

A) lengthy product development cycles
B) costs associated with building a brand
C) cash flow challenges
D) capital investments
E) personnel costs